What is the purpose of attaching a ground wire to live missiles?

Attaching a ground wire to live missiles serves a critical safety function by preventing static electricity from igniting the rocket motor. When missiles or similar explosive devices are handled or transported, they can accumulate static charges. If these charges reach a certain threshold, they pose a significant risk of ignition, which could lead to unintended detonation of the rocket motor.

By installing a ground wire, any static electricity that builds up can be safely discharged into the ground. This procedure is a standard safety practice aimed at ensuring the safety of personnel, equipment, and the surrounding environment during handling and preparation activities involving live munitions. Thus, the purpose of the ground wire is fundamentally linked to preventing accidents and ensuring safe operations with explosives.